Studies On Investigation,Collection And Protection Of Wild Lilium Germplasm Resources From Qinba Moutain Aera

From July, 2005 to August, 2006, we had carried out three times for the exploration on the wild Lilium species distributede, morphological characters, habitat conditions and the soil condition in the Qin-ba Mountain areas. The aim of the study is to study the genetic resource of Lilium in original habitat, analysis the soil samples which were collected from this region, and get useful ideas about the conservation and utilization of Lilium species in this region.The result shows:1. In the natural distribution area, 6 Lilium species had beeen founded and collected to conserved in the nursery field, which were L. tigrinum, L. pumilum, L. brownie, L. duchartrei and L. leichtlinii, and among these species L. leichtlinii was firstly reported. It can be concluded that L. pumilum has a wildly adaptability, following with L. lancifolium and L. brownii, L. duchartrei and L. leichtlinii var. maximowiczii only distributed in certain areas which have a narrow adaptability. In viewing of the horizontal distribution, it can be found that Shangluo area was the most widely distributed by lilium species, the next was Hanzhong, three species were found in Ankang and Ganna area, each species had an overlapping distribution areas. In view of the distribution of species, L. leucanthum was the most widespread, next were L. lancifolium and L. brownii, L. leichtlinii was only found in Diebu County of Gannan Area. Most of the lilium species like cool and moist condition, above 75% plants distributed in bush in the slope along rivers. A few plants could be found meadow or the edge of forest area.2. The different habitats of lilium species have approximately the same PH value of soil, and approaching to the neutrality. L. pumilum adapted to weak alkaline soil, and L. brownii grew well in low-acid soil. L. lancifolium grew in the low soluble salt content soil, in the opposite, L. brownii and L. pumilum grew in the high soluble salt content soil. L. lancifolium, which was different with other species, was suitable for the soil with low organic matter.3. The soil collected from Gannan area was weakly alkaline, and the soil from other areas were a little acid ; The soluble salt content in the soil from Gannan was obviously higher than others, and what is more, the soil salination degree from Gannan was high, thus this area was only suitable for L. pumilum, L. leucanthum and L. leichtlinii which had strong resistance.4. All of the lilium species were introduced to the nursery field of lilium Northweat A & F University, and variation was found among biology characteristics including plant height and leaf shape. The plants became a little shorter, and the leaf became a little longer and more widely, the foliage index reduced, the pedicel length shortened, and flowered quantity decreased. Although some of the morphological character changed after introduced cultivation, the plants could grow well. Therefore, all of the lilium species could be preserved in the lilium nursery field of this region for further utilization.